CVE-2018-9234

EUVD-2018-20828
GnuPG 2.2.4 and 2.2.5 does not enforce a configuration in which key certification requires an offline master Certify key, which results in apparently valid certifications that occurred only with access to a signing subkey.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 38%
Affected Products (NVD)
VendorProductVersion
gnupggnupg
2.2.4
gnupggnupg
2.2.5
canonicalubuntu_linux
14.04
canonicalubuntu_linux
16.04
canonicalubuntu_linux
17.10
canonicalubuntu_linux
18.04
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
gnupg2
bookworm
2.2.40-1.1
fixed
bullseye
2.2.27-2+deb11u2
fixed
bullseye (security)
2.2.27-2+deb11u2
fixed
jessie
no-dsa
sid
2.2.45-2
fixed
stretch
no-dsa
trixie
2.2.44-1
fixed
wheezy
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
gnupg
artful
dne
bionic
dne
trusty
not-affected
xenial
not-affected
gnupg2
artful
not-affected
bionic
Fixed 2.2.4-1ubuntu1.1
released
trusty
dne
xenial
not-affected
Common Weakness Enumeration
References
https://dev.gnupg.org/T3844
https://usn.ubuntu.com/3675-1/
https://dev.gnupg.org/T3844
https://usn.ubuntu.com/3675-1/